Ash conveyer and ejector



Patented Apr. 26, 1927.

rarest CHARLES WO'IRUBA, or roar wAsHINs'roN, rnNNsYLveNm, assumes. no CHARLES L. BACI-IMAN AND EUGENE HAHN, Born er PHI ADE PHIA, PENNSYLVANIA, COMPOSING THE GOIPABTNERSHIP vroron' E GINE R-me co ASH GONVEYER AND'EJECTCR.

Application filed. August 21, 1922. Serial No. 583,234.

My invention relates to conveyers and e ectors of the steam et, vacuum or similar type, which convey or move ashes, coke or other disintegrated material through a, duct by the force of vacuum or pressure created through the medium of fluids such as steam or air sent through. this duct at high velocities and attending expansions. In conveyers or ejectors of this type where there is a bend in the duct, or where the course of the ashes in the duct is changed, it'is common practice to employ detachable liners disposed at the point of impingement of the material against the side of the duct and adapted, after having been worn to the ma imum amount, to be removed and replaced by others, thereby preventing wear in the duct itself or part thereof.

The object of this invention is to provide improved means for securing these liners in place, this securing means being such as to eliminate all possibility of displacement of the liners which would be bound to'interferc with the satisfactory and eflicient operation of the conveye'r or ejector.

, Theinvention will bemore readily understood by reference to the attached drawings, in which: p f

Figure 1, is a transverse section through that section of an elbow in the duct in which the nozzle, by means of which the fluid jet is formed, is established;

1, and

Fig. 3, 1s a wedge-like key.

In the drawings,

view in perspective of the stautially L-shaped and in the form'of an elbow. having in one sidelairopemng 2 for insertion of a nozzle 3, whlch latter 1S Cl1S posed in substantial alignment with the the leg at of the. duct and having the effect Fig. 2, is a section on the line 22, Fig.

1 indicates a. section of an ejector duct, in the present instance subofdrawi'ng inwardly through the leg 5ashes or other materials deposited in that section of the ejector and forcing themoutwardly through the leg 4.: As the ashes or other 'ma terials are drawn into the leg 5 of the duct,.the

momentum of their movement carries them against the rear wall ofthe leg 4, thisporticnof the duct wall accordingly recelvi'ng the considerable impact and thus the heaviest wear and normally deteriorating with much greaterrapidity than the remainder of duct constituting the conveyer or ejector.

Ithas been customary in the past to line such elbows and bends of the duct Wall with detachableelements adapted to take the wear and to be replaced when sufliciently worn.

As clearly shown in F ig. 2, theliner elements .6 are in, the present instancesubstantially semicircularin cross section, although they maybe of various other shapes, and. either straight sidedjor curved according'to the needs of the particular application or the design of that portion of the duct to'which the liner is applied, with one face recessed at 7 to conform to the curvature. of the interior of the duct, these liners being, received in a pocket 8 at the rear of the'leg 4 ofthe section' 1., said pocket being provided with a detachable cover plate 9 for retaining the liner elements thereim Bolts 10 in the present instance secure the-cover plate to the section 1, and a suitable ga m akethe: joint tight.

As best illustrated plate has in the; present instance inwardly extending lugs or projections 12 whichare adapted to bear against the rear faces of the sket 11 'is provided to in Fig.2, the cover liner elements, which are thus confined between the said projections; and a pair of shoulders 13, 18, at the inner side of the .pocket 8, againstwhichthe forward side edges of the liner elements bear, as best Shown in Fig. 2.

As shown in Fig. 1, two main liner secti'ons 6, 16, are employed,.one end face of each of the sections beingsquare with the sides, althoughthey may be of any desirable shape, and the other end surface of each of the liners lying at a'slight angle. In this elbow 1, these liner sections are disposed asshown in. Fig. 1, with the square ends abutting shoulders 14:, 14:, at the top and bottom, of the .105 pocket in which the liners are established,

the inclined faces at the opposite ends of the liners forming therebetween a wedgeshaped opening in which a securing wedge or key 15 is established, said key being clearly illustrated in Fig. 3. Thekey 15, which in the present instance functions as a section of the, liner, has extending vfrom its rear face studs 16, 16, adapted to pass through the cover plate and having nuts, whereby the key may be drawn tightly between the two liner sections, spreading said sections apart and forcing them against the aforesaid shoulders 14, 14, of the pocket. It will be seen that in this manner the sections'of the. liner are most firmly secured inithe pockets, the forward edges of the liners 7 bearing against the longitudinal shoulders 13, 13, at thefront of the pocket, the rear face of the liners bearing against the lugs '12 on the cover plate and the wedge-shaped key forcing the said line-rs respectively against the end shoulders 14, 14, of the pocket. In a construction of this type, there is no possibility of the liners becoming loosened and dislocated under the severest impact of material against such liners opposing their direction.

It will benoted that the liner sections 6,

I 6, have exactly the same dimensions and are accordingly reversible, therone section being capable of taking the position of the other section, and vice versa. In this manner, any

uneven wear developing in the sections may this invention may find application at any point in the duct where there occurs a change in direction and where in fact there occurs an impingement of the material passing through the duct against the side there of. It will further be understood that there may be considerable modification in the form of the liners and in the number of sections and keys employed, those not being limited to the numberillustratedin the drawings 1 and hereinbefore described.

place between the said shoulders.

I claim 1.VA duct having a liner so established 2. A duct having therein a liner so estab lished as to constitute a section of the wall of the duct, said liner comprising a plurality of sections disposed end to end longitudie nally of the duct, the ends of the liner being square with the sides of the sections, and the adjacent ends of the sections being formed at an angle to the sides and being so disposed relative to each other that a substantially wedge-shaped opening is formed therebetween, shoulders in said duct abutting the said square ends of the liner, and a wedge-shaped key established between the adjacent endsof the sections and constituting means for retaining the said sections in place between the shoulders. 3. A- duct having a detachable liner so established therein as to constitute a section of the duct wall, said liner comprising a pair of independentsections each. of which has one end square" with the longitudinal side edges and the other end formed on an angle-thereto, a pocket in said duct in which the liner sections are established end soy to end longitudinally of the duct and with the sections outwardly against the said shoulders. r 1 V 7 V V 4. A duct comprising a pocket adaptedto receive a liner constituting asection of the duct wall, said liner comprising a plurality of sections adapted to be placed end to end in the pocket longitudinally of the duct, a cover plate for'said pocket,'1neans for securing the cover plate to the duct, a wed shaped element adapted to beestablished intermediate adjacent ends of the respective sections, and means for securing saidwedgeshaped element to thesaid cover.

5. A duct comprising apocket adapted to receive a liner, said liner comprising a plurality of sections adapted to be placed end to end in said pocket longitudinally of the duct to constitute a section of the duct wall, a

shoulders in said 'duct forming an abutment for the front side edges of the liner sections, a cover for said pocket adapted to be secured to the duct and forming an abutshoulders forming abutments for the ends of said liner, and a wedge-shaped key adapted to be established between adjacent ends of the liner sections for confining the liner shoulders,

6. A duct having a liner established therein to constitute a section of the wall of the duct, said liner comprising main sectionsdis posed end to end longitudinally of the duct, and a 'wcdging key section established intermediate ad acent ends of the main sections, substantially as and for the purpose set forth.

7. A duct having a liner established therein to constitute a section of the wall of the duct, said liner comprising a plurality of sections disposed end to end longitudinally of the duct, abutments upon the duct for the ment for the rear side of the liner sections,

sections tightly between flthe said end;

outer ends of the liner sections, and means j 8. A duct having a linerestablished there in to constitute a section of the well of the duct, said liner con'iprising a pair of sections placed end to end Iongitudinaiiy of the duct, abutinents on, the duct for the outer ends of said sections, and means established intermediate the adjacent ends of said sections for forcing the letter longitudirmlly against said abutments.

the abutinents.

V 9. A duct having a liner established thcrein to constitute El, sectionof the Wall of the duct, said liner comprising a pair of end sections and an intermediate section longitudinally of the duct abuti'ne'its on the duct for the outer ends of sail eni sections said intermediate section being adapted. by insertion between the adjacent ends of the end sections to force the latter CHAR-LES WOTRUBA,

20 outwardly against 

